What rule governs a baseball stuck in catchers chest protector?

When a Baseball becomes stuck in a catcher's chest protector during a game, the play is typically ruled a dead ball. According to MLB rules, if the ball is not in play and cannot be retrieved, the umpire will call for a timeout. The batter may be awarded first base if the ball was considered to be a wild pitch or passed ball, depending on the circumstances. The specific ruling may vary based on the situation and the umpire's discretion.